Valves
Inflation Seal Butterfly Valve
CYprocess inflation seal butterfly valves — also called inflatable-seat butterfly valves — close with an air-inflated seat ring pressed against the disc. The seat follows the disc surface instead of rubbing it, so sealing stays tight on abrasive powders for far longer than a resilient seat.
Shanghai-built. Drawings come with the quotation, and material certificates are available on request. Factory and documents
Overview
About Inflation Seal Butterfly Valve
How this equipment works in powder handling lines and what to consider when selecting it.
Working principle
The disc swings open and closed like a normal butterfly valve, but the seat is a flexible ring in its own housing. When the valve closes, the ring is inflated with compressed air and presses evenly against the disc rim; when it opens, the ring deflates first, so the disc never drags across a pressurised seal.
Options and integration
Body and disc in SS304 or SS316L, ring in food-grade elastomer, and pneumatic actuation with solenoid and limit switches as standard. Typical mounts are silo and hopper outlets, blow-tank inlets and conveyor line gates where a soft-seated valve would wear out quickly.
Where it fits in the process
Features
Key Features
Design points that make the Inflation Seal Butterfly Valve practical for industrial powder plants.
Specifications
Typical Specifications
Final sizing depends on material properties, capacity and plant layout. Request a project review for a tailored proposal.
| Type | Butterfly valve with inflatable seat ring |
|---|---|
| Sizes | DN100 - DN300 (other flanges on request) |
| Material | SS304 / SS316L body and disc |
| Seat | Food-grade elastomer, air-inflated |
| Actuation | Pneumatic with solenoid + limit switches |
| Control sequence | Deflate - open / close - inflate interlocked |
Materials
Suitable Materials
Powder and granule categories typically specified with a inflation seal butterfly valve. Suitability is confirmed per project from bulk density, particle size, moisture and process conditions.
Abrasive minerals
quartz, sand, limestone, alumina
Chemical powders
pigments, TiO2, PVC powder
Food & dairy
flour, sugar, milk powder
Battery materials
cathode, anode, black mass
Not sure whether your material will convey? Send us a sample description and we will confirm before quotation.
Applications
Process Applications
Process points where this equipment is typically installed, from bulk intake through to packing.
Downloads
Catalogs & Datasheets
Technical documents related to this product and our powder handling range.
Product Catalog
CYprocess Powder Handling Product Catalog (2026)
PDF · 3.5 MB
DownloadTechnical Datasheet
Heavy-Duty Rotary Valve Datasheet
PDF · 166 KB
DownloadTechnical Datasheet
Blowing-Seal Hygienic Rotary Valve Datasheet
PDF · 185 KB
DownloadTechnical Datasheet
Vacuum Heat Sealing Machine Datasheet
PDF · 153 KB
DownloadFAQ
Inflation Seal Butterfly Valve FAQ
Common questions about selection, integration and quotation.
A fixed seat is dragged by the disc every cycle and wears fastest on abrasive powder. The inflatable ring only presses on the disc when the valve is closed, so there is no rubbing travel — the ring lasts longer and the closure stays dust-tight instead of beginning to leak after a few thousand cycles.
System partners
Related Products
Equipment commonly paired with Inflation Seal Butterfly Valve in complete powder handling lines.
Engineering support
Enquire about Inflation Seal Butterfly Valve
Share your material, capacity and plant layout. Our engineers will confirm sizing and send a tailored proposal.